Yooj Yim Lub Hwj Huam LED Tawm Tawm Tam Sim No Tus Kheej, Hloov Kho & Tshaj Tawm: 3 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24

Cov Lus Qhia no yog qhov tseem ceeb rov ua dua ntawm Dan txoj kab hluav taws xob tam sim no tswj hwm. Nws cov ntawv yog qhov zoo heev, tau kawg, tab sis tsis muaj qee yam hauv txoj kev kom meej. Nov yog kuv qhov kev sim daws qhov ntawd. Yog tias koj nkag siab thiab tuaj yeem tsim Dan's version, kuv cov ntawv yuav zaum tsis qhia koj dab tsi tshiab txaus ntshai. Txawm li cas los xij…… Thaum sib sau ua ke kuv tus tswj hwm raws li Dan's, Kuv khaws saib nws cov duab ntawm cov khoom sib xyaw thiab ntsiag to- uas tus pin txuas rau lwm tus pin ?? Puas yog txuas nrog qhov ntawd lossis tsis yog? Nws yog ib qho yooj yim Circuit Court, tau kawg, tab sis kuv tsis yog kws kho hluav taws xob thiab kuv tsis xav kom nws yuam kev … Kuv tau ntxiv ib qho kev tiv thaiv: kev hloov pauv ntawm qhov ua tau zoo ntawm DC lub zog hluav taws xob thiab cov khoom seem hauv Circuit Court kom kuv tuaj yeem qhib thiab tua nws. Tsis muaj laj thawj cais nws, thiab nws yog qhov yooj yim heev. Kuv kuj yuav tsum nco ntsoov ntawm no thaum pib: txawm li cas los xij "Dan's" cov lus thov tuaj yeem ua rau qhov tsis sib xws, qhov Circuit Court no TSIS YOG qhov zoo tshaj plaws rau kev tsav tsheb LED los ntawm lub zog xa khoom uas muaj txiaj ntsig ntau dua qhov poob ntawm LED. Kuv tau sim tsav ib leeg 3.2V xiav LED ntawm 140 mAh (kuaj tam sim no yog 133 mAh- ze heev) los ntawm lub zog hluav taws xob ntsuas rau 9.5 volts thiab qhov kawg tshwm sim yog li ntawm 60 vib nas this, LED pib flicker thiab tom qab ntawd thaum kawg kaw … Nws tau ua qhov no ntau zaus nrog lub sijhawm uas tau poob qis ntawm lub sijhawm qhib thiab ua tsis tiav. Tam sim no nws yuav tsis qhib hlo li. Tau hais tias, Kuv kuj tseem tau tsav ib leeg RGB lub zog loj LED yuav luag tsis tu ncua rau ib hlis tam sim no siv lub zog sib txawv uas zoo sib xws sib npaug qhov hluav taws xob poob ntawm LED- yog li cov Circuit no tuaj yeem ua haujlwm, zoo ib yam, tab sis tsis tas li, yeej tsis zoo li tau cog lus tseg thaum xub thawj, thiab tej zaum yuav ua rau koj lub zog LED puas tsuaj mus. Lub suab ntawm kev paub ntawm no hais tias nws yuav ua haujlwm ntev li qhov xav tau ntawm koj li LEDs ze rau lub zog hauv volts los ntawm koj lub zog siv. Yog tias koj pom flicker, qhov ntawd txhais tau tias LED (s) yog/hlawv tawm thiab yog/twb tau puas tas mus li. Nws tau coj kuv rau rau puas LEDs lub zog rhuav tshem kom paub qhov no. "Ntau tus Bothans tuag los coj peb cov ntaub ntawv no …" Cov khoom siv: Ntawm no yog Dan cov npe khoom ntawm cov khoom, lo lus rau lo lus tab sis kho rau thawj yam khoom (Dan tau yuam kev muab cov lej khoom ntawm 10K ohm resistor, tsis yog 100K ohm- sau tam sim no qhia tus lej rau hom raug). Kuv kuj tseem ntxiv txuas rau cov khoom lag luam uas tau hais tiag tiag:-R1: kwv yees li 100k-ohm resistor (xws li: Yageo FMP100JR-52-100K) R3: teeb tsa tam sim no-saib hauv qab Q1: me me NPN transistor (xws li: Fairchild 2N5088BU) Q2: N-channel FET loj (xws li: Fairchild FQP50N06L) LED: fais fab LED (xws li: Luxeon 1-watt lub hnub qub dawb LXHL-MWEC)

- Cov khoom hloov pauv, S1, yuav tsum tau ntsuas rau qhov hluav taws xob ntawm DC lub zog siv hluav taws xob uas koj yuav siv. Piv txwv li, 12V hloov pauv, yuav tsis tsim los tuav 18V lub zog. Nco ntsoov tias Q2 tseem hu ua MOSFET, nMOSFET, NMOS, n-channel MOSFET, thiab n-channel QFET MOSFET sib pauv, Q1 kuj tseem hu ua NPN bipolar hlws ris transistor lossis NPN BJT. Dan tsis nkag mus rau hauv "kwv yees li" txhais li cas, thiab nws tsis piav qhia deb npaum li cas koj tuaj yeem mus lossis qhov no yuav cuam tshuam li cas; tsis yog nws piav qhia "me" lossis "loj" thiab qhov cuam tshuam uas lawv yuav muaj. Tu siab, tsis tuaj yeem I. Nws zoo li peb tau ua raws li cov khoom tshwj xeeb tshwj tsis yog tias peb tau txais qib kawm hauv kev tsim hluav taws xob. Tshwj xeeb tshaj yog muab cov delicacy ntawm LED koom nrog, nruj ua raws li qhov kev xaiv tsim nyog nkaus xwb.

Hais txog R3:

Raws li Dan, tus nqi rau R3 hauv ohms xav tau cuam tshuam nrog tam sim no uas koj xav kom tsav koj lub LED (cov kev txwv uas yuav tau teev tseg los ntawm cov khw) xws li qhov koj xav tau tam sim no hauv amps = 0.5/R3. Hauv qhov sib npaug, kev tiv thaiv ntau dua hauv R3 yuav ua rau tsawg dua tam sim no raug tsav los ntawm LED. Intuitively, qhov no ua rau kev txiav txim siab tias kev tiv thaiv zoo tshaj (piv txwv li, tsis muaj ib tus neeg tiv taus txhua) yuav txhais tau tias LED yuav tsis ua haujlwm (0.5/infinity = tsawg dua xoom). Kuv tsis yog, qhov tseeb, txhua qhov tseeb tias qhov no yog qhov tseeb, txawm li cas los xij, thiab kuv tus kheej qhov kev sim ua tiav ntawm qhov kev qhia no qhia tias nws tsis yog li ntawd. Txawm li cas los xij, yog tias peb ua raws li Dan txoj kev npaj, R3 ntawm 5 ohms yuav tsim tawm tam sim no ntawm 0.5/5 = 0.1 amps lossis 100 miliamps. Ib feem loj ntawm lub zog LEDs zoo li yuav tsum nyob ib puag ncig 350 mAh, yog li rau cov no koj yuav xav tsim kom muaj R3 tus nqi ntawm txoj cai nyob ib ncig ntawm 1.5 ohms. Rau cov uas tsis paub nrog resistors, nco ntsoov tias koj tuaj yeem tsim qhov 1.5 ohms los ntawm kev siv ua ke ntawm cov sib txawv sib txawv hauv qhov sib npaug, tsuav yog koj qhov ua tiav zaum kawg yog 1.5 ohm ntawm kev tawm tsam. Yog tias siv ob tus tiv thaiv, piv txwv li, koj tus nqi R3 yuav sib npaug rau tus nqi ntawm tus tiv thaiv 1 sib npaug los ntawm tus nqi ntawm tus tiv thaiv 2, thiab cov khoom faib los ntawm tag nrho R1+R2. Lwm qhov piv txwv: 1 resistor ntawm 5 ohms ua ke ua ke nrog lwm qhov, hais tias, 3 ohms, muab rau koj (5x3)/(5+3) = 15/8 = 1.875 ohms uas tom qab ntawd yuav ua rau muaj qhov tsis tu ncua tam sim no hauv Circuit Court ntawm 0.5/1.875 = 0.226 amps lossis 266 mAh.

Cov neeg tiv taus raug ntsuas rau lub peev xwm sib txawv los ua kom lub zog tawg. Cov neeg tiv thaiv me me tuaj yeem tso tawm lub zog tsawg dua li cov loj vim tias qhov loj dua yuav tsis hlawv sai sai yog tias tam sim no ntau dhau los ntawm lawv. Koj tsis tuaj yeem siv lub ntsej muag tiv thaiv sab hauv lub tshuab hluav taws xob no vim tias nws tsis tuaj yeem tuav lub zog tawg. Tsis tas li, koj yuav tsis tuaj yeem nrhiav tus tiv thaiv uas yog "loj heev." Loj dua/ Lub cev loj dua cov neeg tawm tsam tsuas yog tuaj yeem tuav lub zog ntau dua li qhov me. Qhov loj dua tuaj yeem raug nqi ntau dua kom tau txais, thiab yuav siv qhov chaw ntau dua, tab sis tus nqi feem ntau tsis tsim nyog (txhua lub tso suab tawg muaj ib puas tus tiv thaiv hauv nws nrog lub zog ntsuas loj) thiab qhov sib txawv hauv qhov chaw yog nyob ntawm qhov kev txiav txim ntawm cubic millimeters, yog li xav tias tsis raug yuam kev ntawm kev ceeb toom thiab siv qhov loj tshaj tiv thaiv ntawm qhov tsis haum uas koj tuaj yeem pom. Koj tuaj yeem xaiv ib qho me me dhau, tab sis nws tsis tuaj yeem xaiv ib qho loj dhau.

Nco ntsoov tias yog tias koj muaj qee qhov nichrome siab tiv thaiv xaim ntawm tes, koj tuaj yeem txiav qhov no mus txog qhov ntev uas yuav haum rau koj qhov kev xav tau tsis tas yuav futz nrog ntau tus tiv thaiv. Koj yuav xav tau Ohm meter los ntsuas qhov muaj peev xwm tiv taus tiag tiag, thiab nco ntsoov tias muaj qee zaum qee qhov kev tiv thaiv (tej zaum ntau npaum li 1 ohm) nruab nrab ntawm ob lub xov hlau ntawm koj lub Ohm meter raws li nws yog: sim qhov no thawj zaug los ntawm kov lawv ua ke thiab pom dab tsi ntaus ntawv nyeem, tom qab ntawd suav nrog qhov no thaum koj txiav txim siab ntau npaum li cas koj yuav siv cov hlau nichrome (yog tias koj pom 0.5 ohms ntawm kev tiv thaiv thaum koj kov cov xov hlau ntawm koj lub Ohm meter ua ke, thiab koj yuav tsum xaus nrog, hais, 1.5 ohms ntawm kev tiv thaiv ntawm koj cov hlau nichrome, tom qab ntawd koj xav tau cov xaim ntawd "ntsuas" 2.0 ohms ntawm kev tiv thaiv rau koj ntawm Ohm meter).

Xwb, tseem muaj ib txoj hauv kev siv me ntsis ntawm cov hlau nichrome los ua kom tiav qhov Circuit Court no txawm tias yog LED uas nws ntsuas tam sim no koj tsis paub! Thaum koj qhov kev ua tiav tiav tab sis tsis muaj R3, siv qhov ntev ntawm cov hlau nichrome uas yog qhov ntev dua qhov kev tiv thaiv uas koj xav tau tsawg kawg ib nti lossis ob (qhov tuab ntawm cov hlau no, qhov ntev koj xav tau. Tam sim no txuas lub hwj chim rau nruab nrab ntawm U ntawm nichrome xaim xws li cov laum twists nws yuav pib qhwv cov hlau nyob ib puag ncig qhov siv me ntsis. ntawm Circuit Court tau teeb tsa kom raug, lub LED yuav qhib sai sai heev, thiab yuav ci dua li cov xov hlau tau luv dua! Nres thaum lub teeb ci- yog tias xaim dhau luv, koj LED yuav hlawv tawm. Nws tsis yog t yog qhov yooj yim los txiav txim thaum lub sijhawm no tau mus txog, txawm li cas los xij, yog li koj yuav tau txais koj txoj hauv kev nrog cov txheej txheem no.

Hais txog cov dab dej sov: Dan tseem hais txog qhov tseem ceeb ntawm cov cua sov rau qhov haujlwm no, thiab xav tau kev siv hluav taws xob sab nraud DC ntawm 4 thiab 18 volts (pom tias amps tsis muaj teeb meem rau lub zog siv, txawm tias kuv tsis paub qhov no rau tseeb). Yog tias koj tab tom ua haujlwm fais fab LED, koj yuav xav tau qee yam ntawm cov cua sov txuas rau nws, thiab tej zaum yuav xav tau ib qho dhau ntawm qhov ua tau yooj yim ntawm cov khoom siv txhuas batwing "lub hnub qub" muab nrog ntau Luxeon LEDs. Koj yuav tsuas xav tau lub rhaub dej kub rau Q2 yog tias koj tab tom khiav ntau dua 200 mAh ntawm lub zog los ntawm koj lub Circuit Court thiab/ lossis qhov sib txawv ntawm qhov sib txawv ntawm koj lub zog DC thiab cov hluav taws xob ua ke "poob" ntawm koj cov LEDs "loj" (yog tias qhov sib txawv yog ntau dua 2 volts, Kuv yuav tsum siv lub dab dej kub). Qhov siv tau zoo tshaj plaws ntawm ib lub dab dej kub kuj tseem yuav tsum siv me me ntawm cov roj cua sov (Arctic Silver tau suav tias yog cov khoom lag luam siab kawg): ntxuav ob lub rhaub dej kub thiab lub cev ntawm MOSFET/ LED nrog cawv, txhuam kom du, Txawm li cas los xij, THIN txheej ntawm cov roj cua sov dhau ntawm txhua qhov chaw (Kuv nyiam siv X-acto riam riam rau qhov du tshaj plaws, feem ntau txawm tias, qhov ua tau zoo tshaj plaws), tom qab ntawd nias lub ntsej muag ua ke thiab ruaj ntseg siv ib lossis ntau qhov ntsia hlau hauv qhov chaw tsim nyog. Xwb, muaj ntau hom kab xev cua sov uas tseem yuav pab rau lub hom phiaj no. Nov yog qee qhov kev xaiv tsim nyog rau lub rhaub dej kub thiab lub zog hluav taws xob rau ib qho ib txwm teeb tsa teeb tsa (nco ntsoov, koj yuav xav tau ob lub dab dej kub- ib qho rau LED thiab ib qho rau MOSFET- hauv ntau qhov teeb tsa):

Hais txog cov khoom siv fais fab: Nco tseg ceev txog kev siv fais fab: yuav luag txhua lub zog siv hluav taws xob nyob hauv ib qho ntawm lawv cov ntim ntau npaum li cas lawv yuav thiab amps lawv tuaj yeem xa tau. Txawm li cas los xij, tus naj npawb ntawm cov hluav taws xob yuav luag thoob ntiaj teb qis thiab yuav luag txhua qhov khoom siv hluav taws xob ua tau tiag tiag xa qee qhov hluav taws xob ntau dua qhov uas tau hais qhia ntawm lawv lub ntim. Vim li no, nws yuav yog qhov tseem ceeb los ntsuas ib qho khoom siv hluav taws xob uas thov kom xa hluav taws xob nyob ze rau qhov kawg ntawm peb lub spectrum (piv txwv li, nyob ze 18 volts) kom paub tseeb tias nws tsis tau xa ntau lub zog (25 volts yuav tshaj qhov tsim kev txwv ntawm peb lub voj voog). Hmoov zoo, vim yog qhov xwm txheej ntawm Circuit, qhov overstatement ntawm qhov hluav taws xob feem ntau yuav tsis muaj teeb meem vim tias Circuit tuaj yeem tswj tau ntau yam ntawm qhov hluav taws xob yam tsis ua rau LED puas.

Kauj Ruam 1: Tsim Cov Dej Kub Kub (s)

Yog tias koj xav tau lub rhaub dej kub rau koj Q2, koj yuav xav tau lub qhov nyob hauv lub dab dej kub kom thiaj li khiav tau cov ntsia hlau hla lub qhov loj hauv MOSFET lub cev. Tsis tas yuav xav tau lub hau ntswj meej tsuav koj cov ntsia hlau muaj peev xwm haum los ntawm MOSFET qhov, lub taub hau ntawm cov ntsia hlau loj dua (tsuas yog me ntsis) dua li lub qhov, thiab txoj kab uas hla ntawm lub qhov uas koj tsim hauv lub dab dej kub yog tsis ntau me dua txoj kab uas hla ntawm lub tog raj kheej ntawm cov ntsia hlau. Feem ntau, yog tias koj siv lub laum me me uas nws txoj kab uas hla nyob ze tab sis me dua li koj cov ntsia hlau lub tog raj kheej, koj yuav tsis muaj teeb meem txuas MOSFET rau lub rhaub dej kub. Cov xov ntawm cov hlau hlau feem ntau muaj zog txaus los txiav rau hauv lub dab dej kub (muab nws yog txhuas lossis tooj liab) thiab yog li "tsim" qhov tsim nyog threaded qhov. Drilling rau hauv txhuas yuav tsum tau ua nrog ob peb tee ntawm cov tshuab tshuab nyias nyias ntawm qhov ntsis me ntsis (xws li 3-hauv-Ib lossis cov tshuab xaws roj) thiab cov laum nias nrog maj maj ua siab nyob ib ncig ntawm 600 rpm thiab 115 hauv-lbs ntawm lub zog (qhov Dub & Decker laum lossis qee yam zoo sib xws yuav ua haujlwm zoo). Ceev faj: qhov no yuav yog qhov me me, qhov tob thiab koj qhov me ntsis tho me ntsis yuav tawg yog tias siv lub zog ntau dhau rau nws ntev dhau! Nco tseg zoo: "lub cev" ntawm Q2 txuas nrog hluav taws xob rau "qhov chaw" tus pin ntawm Q2- yog tias ib yam dab tsi hauv koj lub xov tooj cua cuam tshuam rau lub dab dej sov no tsis yog MOSFET lub cev, koj tuaj yeem tsim hluav taws xob luv uas tuaj yeem tshuab koj lub LED. Xav txog npog ib sab ntawm lub dab cua sov ntsib koj cov xov hlau nrog txheej txheej hluav taws xob los tiv thaiv qhov no los ntawm qhov tshwm sim (tab sis tsis txhob kaw lub dab dej kub nrog ib qho ntxiv ntawm qhov no ntau dua qhov tsim nyog, txij li nws lub hom phiaj yog txav cov cua sov los ntawm MOSFET mus rau ib puag ncig huab cua- daim kab xev hluav taws xob yog lub rwb thaiv tsev, tsis yog tus coj, ntawm lub zog cua sov).

Kauj ruam 2: Circuit Court

Nov yog yam koj yuav tsum tau ua los tsim qhov Circuit no:

* Muab cov xaim hluav taws xob zoo ntawm koj lub zog xa mus rau qhov zoo ntawm koj li LED. Kuj tseem txuas qhov kawg ntawm 100K tus tiv thaiv rau tib lub ntsiab lus (qhov zoo ntawm LED).

* Siv lwm qhov kawg ntawm tus tiv thaiv rau GATE tus pin ntawm MOSFET thiab COLLECTOR tus pin ntawm tus me me transistor. Yog tias koj tau glued ob lub transistors ua ke, thiab muaj cov xim hlau ntawm MOSFET tig mus deb ntawm koj nrog rau rau ntawm lub transistor tus pin taw qhia qis, GATE tus pin thiab COLLECTOR tus pin yog FIRST TWO PINS ntawm cov transistors- hauv lwm lo lus, muab ob sab laug sab laug ntawm cov transistors ua ke thiab muab lawv txuas rau qhov tsis txuas nrog ntawm 100K resistor.

* Txuas tus pin nruab nrab ntawm MOSFET, DRAIN tus pin, mus rau qhov tsis zoo ntawm LED nrog xaim. Tsis muaj dab tsi ntxiv yuav txuas rau LED.

* Txuas BASE tus pin ntawm tus me me transistor (piv txwv li, tus pin nruab nrab) mus rau SOURCE tus pin ntawm MOSFET (uas yog nws tus pin sab xis).

* Txuas tus EMITTER tus pin (tus pin sab xis) ntawm lub transistor me dua mus rau qhov xaim tsis zoo ntawm koj lub zog siv.

* Txuas tus pin zoo tib yam rau ib qho kawg ntawm R3, koj cov resistor (s) xaiv rau koj li LED xav tau.

* Txuas lwm qhov kawg ntawm qhov kev tawm tsam rau yav dhau los hais BASE tus pin/ SOURCE tus pin ntawm ob lub transistors.

Cov ntsiab lus: txhua qhov no txhais tau tias koj txuas tus me me transistor nruab nrab thiab sab xis txoj cai rau ib leeg ntawm R3 tus tiv thaiv, thiab txuas cov transistors rau ib leeg ob zaug ncaj qha (GATE rau COLLECTOR, SOURCE to BASE) thiab ib zaug tsis ncaj qha ntawm R3 (EMITTER rau SOURCE). Qhov nruab nrab tus pin ntawm MOSFET, DRAIN, tsis muaj dab tsi ua tshwj tsis yog txuas rau qhov tsis zoo ntawm koj li LED. Cov LED txuas rau koj cov khoom siv hluav taws xob nkag thiab mus rau ib qho kawg ntawm R1, 100K tus tiv thaiv (lwm qhov ntawm LED txuas nrog DRAIN tus pin, raws li tau hais tseg). EMITTER tus pin txuas ncaj qha rau cov xov tooj tsis zoo ntawm koj lub zog siv, thiab tom qab ntawd rov rov qab mus rau nws tus kheej (ntawm nws tus kheej tus lej PIN) thiab rau MOSFET rau zaum thib peb thiab zaum kawg ntawm R3 resistor uas tseem txuas ncaj qha rau cov xov tooj tsis zoo ntawm lub hwj huam mov. MOSFET yeej tsis txuas ncaj qha mus rau qhov tsis zoo lossis cov xov hlau zoo ntawm lub hwj chim, tab sis nws TSIS txuas rau ob ntawm lawv ntawm txhua ntawm ob tus tiv thaiv! Tsis muaj tus tiv thaiv ntawm tus me me transistor tus thib peb tus pin, nws EMITTER, thiab cov xov tooj tsis zoo ntawm lub hwj chim-nws txuas ncaj qha. Ntawm qhov kawg ntawm kev teeb tsa, cov khoom siv hluav taws xob txuas ncaj qha mus rau LED, txawm tias nws yuav siv lub zog ntau dhau (thaum xub thawj) kom tsis hlawv tawm LED: qhov hluav taws xob ntxiv uas yuav tau ua qhov kev puas tsuaj no yog rov qab los ntawm 100K tus tiv thaiv thiab los ntawm peb cov transistors uas yuav ua kom nws nyob hauv kev txheeb xyuas.

Kauj Ruam 3: Qhib Nws: Troubleshoot Yog Xav Tau

Thaum cov cua sov txuas nrog thiab koj cov hlua txuas txuas tau ruaj khov thiab koj paub tseeb tias koj cov LED yog (yog) taw qhia kom raug thiab koj tau txuas nrog qhov raug coj mus rau cov xov tooj raug, nws yog lub sijhawm los ntsaws DC fais fab mov thiab tig lub hloov! Txog tam sim no, ib ntawm peb yam yuav tshwm sim: LED (s) yuav pom kev raws li qhov xav tau, LED (s) yuav luv luv ci ci thiab tom qab tsaus ntuj, lossis tsis muaj dab tsi tshwm sim hlo li. Yog tias koj tau txais thawj qhov ntawm cov txiaj ntsig no, nrog koj zoo siab! Tam sim no koj muaj lub voj voog ua haujlwm! Thov kom nws nyob ntev rau koj. Yog tias koj tau txais txiaj ntsig #2, tom qab ntawd koj tsuas yog tshuab koj cov LED thiab yuav xav tau pib dua nrog cov tshiab (thiab koj yuav tsum tau rov ntsuas koj lub Circuit Court thiab txiav txim siab qhov twg koj mus yuam kev, tej zaum los ntawm kev txuas xaim tsis raug lossis tso 2 xaim hla uas koj yuav tsum tsis txhob muaj). Yog tias koj tau txais txiaj ntsig #3, tom qab ntawd muaj qee yam tsis raug ntawm koj lub Circuit Court. Hloov nws tawm, tshem tawm DC lub zog hluav taws xob, thiab hla koj li kev sib txuas hauv Circuit-txuas-txuas kom ntseeg tau tias koj tau txuas txhua tus txhuas kom raug thiab tias koj cov LEDs tau qhia txhua qhov kom raug hauv Circuit. Tsis tas li, txiav txim siab ob zaug txheeb xyuas qhov paub miliamp tus nqi ntawm koj cov LED thiab ua kom ntseeg tau tias tus nqi koj tau xaiv thiab siv rau R3 yuav muab tam sim no txaus los tsav nws/ lawv. Ob zaug kos tus nqi R1 thiab xyuas kom tseeb tias nws yog 100k ohms. Thaum kawg, koj tuaj yeem sim Q1 thiab Q2, tab sis cov txheej txheem rau ua qhov no dhau ntawm qhov kev qhia no. Ib zaug ntxiv: qhov laj thawj feem ntau yuav tsis pom lub teeb pom kev yog cov no: 1.) koj cov LED (s) yog/ tsis tau taw qhia kom raug- txheeb xyuas qhov kev taw qhia siv lub multimeter thiab rov qhia dua yog tias tsim nyog; 2.) koj muaj cov xaum xoob xoob sib koom ua ke nyob ib puag ncig hauv koj lub xovtooj- siv cov hlau txuas thiab rov txuas dua ib qho kev sib txuas uas yuav xoob; 3.) koj muaj cov xaim hla mus rau qhov twg hauv koj lub Circuit Court- txheeb xyuas txhua lub xov hlau rau luv thiab cais ib qho uas yuav kov tau- nws tsuas yog siv ib qho xaim tooj liab xaim xaim me me nyob rau qee qhov kom ua rau lub Circuit tsis ua haujlwm; 4.) koj R3 yog tus nqi siab dhau los tso cai rau LED ua haujlwm- txiav txim siab hloov nws nrog lub zog tiv thaiv qis, lossis ua kom luv koj cov hlau nichrome me ntsis; 5.) koj qhov kev hloov pauv tsis tau kaw lub Circuit Court- ntsuas nrog lub multimeter thiab kho lossis hloov nws; 6.) yav dhau los koj tau ua puas lub LED (s) lossis ib qho ntawm lwm yam khoom siv hauv daim duab los ntawm ib qho: a. watt resistor) lossis lub dab dej kub txaus rau Q2 lossis rau koj cov LED (ob qho tib si Q2 thiab koj cov LEDs tau nrawm rau kev puas tsuaj cua sov yog tias tsis txuas nrog cov cua sov ua ntej koj qhib lub Circuit Court), lossis; b.) hla cov xov hlau thiab ua rau koj lub LED puas tsuaj (qhov no feem ntau yog nrog los ntawm cov pa tsw phem); lossis 7.) koj tab tom siv Q1 lossis Q2 uas tsis raug rau qhov Circuit no. Tsis muaj lwm hom kev tiv thaiv tau paub hloov pauv tau rau ob lub Cheeb Tsam- yog tias koj sim tsim qhov Circuit Court los ntawm lwm hom transistors, koj yuav tsum cia siab tias Circuit Court yuav tsis ua haujlwm. Kuv vam tias kuv tuaj yeem teb cov lus nug hais txog kev tsim kho cov kab hluav taws xob LED thiab cov tsav tsheb, tab sis raws li kuv tau hais ua ntej, Kuv tsis yog tus kws tshaj lij thiab feem ntau ntawm yam koj pom ntawm no twb tau npog hauv lwm Cov Lus Qhia los ntawm ib tus neeg paub ntau ntxiv txog cov txheej txheem no tshaj kuv ua. Vam tias qhov kuv tau muab rau koj ntawm no tsawg kawg kom meej dua thiab qhia tau meej dua li lwm Cov Lus Qhia Zoo sib xws muaj nyob ntawm lub xaib no. Hmoov zoo!

Yog tias koj lub voj voog ua haujlwm, nrog koj zoo siab! Ua ntej koj hu rau txoj haujlwm ua tiav, nco ntsoov tias koj tshem tawm cov dej seem uas seem los ntawm koj cov khoom sib txuas nrog dej cawv lossis lwm qhov hnyav uas tsim nyog xws li toluene. Yog tias flux raug tso cai nyob hauv koj lub Circuit Court, nws yuav corrode koj cov pins, ua rau koj xaim xaim nichrome puas tsuaj (yog tias koj siv ib qho) thiab tuaj yeem ua rau puas rau koj LED muab sijhawm txaus. Flux zoo heev, tab sis thaum koj ua tiav nrog nws nws yuav tsum mus! Tsis tas li nco ntsoov tias txawm li cas los xij koj teeb koj lub teeb kom ua haujlwm, yuav tsis muaj txoj hauv kev ntawm nws cov xov hlau yuam kev kov los yog sib nrug thaum lub Circuit raug siv lossis txav mus. Wad loj ntawm cov kua nplaum kub tuaj yeem siv ua ib hom kev sib xyaw ua ke, tab sis qhov sib xyaw ua ke sib xyaw ua ke yuav zoo dua. Ib qho kev tiv thaiv uas tsis muaj kev tiv thaiv uas tau siv rau ib yam twg yog qhov ua rau lub sijhawm tsis txaus, thiab cov pob qij txha txuas tau qee zaum tsis ruaj khov raws li peb xav xav tias lawv yog. Kev nyab xeeb ntau dua koj qhov kev sib tw zaum kawg yog siv ntau dua koj yuav tawm ntawm nws!